Struct TouchEvent

pub struct TouchEvent {
    pub timestamp: Option<i64>,
    pub view_parameters: Option<ViewParameters>,
    pub device_info: Option<TouchDeviceInfo>,
    pub pointer_sample: Option<TouchPointerSample>,
    pub interaction_result: Option<TouchInteractionResult>,
    pub trace_flow_id: Option<u64>,
    /* private fields */
}

The self-sufficient, self-consistent collection of pointer-related data, sent from server to client.

Fields

timestamp: Option<i64>

The time this event was observed. Required.

view_parameters: Option<ViewParameters>

The parameters of the associated view and viewport, sufficient to correctly interpret the position, orientation, magnitude, and inter-event distance of touch events dispatched to a view.

• It is issued on connection and on change.

device_info: Option<TouchDeviceInfo>

A description of the pointer device, sufficient to correctly interpret the capabilities and usage intent of the device.

• It is issued once per device.

pointer_sample: Option<TouchPointerSample>

A description of each sampled data point in an interaction of touch events.

• It is issued on every sample in the interaction.

interaction_result: Option<TouchInteractionResult>

The result of gesture disambiguation for a interaction of touch events.

• It is issued once per interaction.

trace_flow_id: Option<u64>

An identifier to correlate this event’s send/receive occurrence across component boundaries or abstraction layers.

Trait Implementations

impl Clone for TouchEvent

fn clone(&self) -> TouchEvent

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for TouchEvent

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl<D> Decode<TouchEvent, D> for TouchEvent

where D: ResourceDialect,

fn new_empty() -> TouchEvent

Creates a valid instance of Self. The specific value does not matter, since it will be overwritten by decode.

unsafe fn decode( &mut self, decoder: &mut Decoder<'_, D>, offset: usize, depth: Depth, ) -> Result<(), Error>

Decodes an object of type T from the decoder’s buffers into self.

impl Default for TouchEvent

fn default() -> TouchEvent

Returns the “default value” for a type.

impl<D> Encode<TouchEvent, D> for &TouchEvent

where D: ResourceDialect,

unsafe fn encode( self, encoder: &mut Encoder<'_, D>, offset: usize, depth: Depth, ) -> Result<(), Error>

Encodes the object into the encoder’s buffers. Any handles stored in the object are swapped for Handle::INVALID.

impl PartialEq for TouchEvent

fn eq(&self, other: &TouchEvent) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl TypeMarker for TouchEvent

type Owned = TouchEvent

The owned Rust type which this FIDL type decodes into.

fn inline_align(_context: Context) -> usize

Returns the minimum required alignment of the inline portion of the encoded object. It must be a (nonzero) power of two.

fn inline_size(_context: Context) -> usize

Returns the size of the inline portion of the encoded object, including padding for alignment. Must be a multiple of inline_align.

fn encode_is_copy() -> bool

Returns true if the memory layout of Self::Owned matches the FIDL wire format and encoding requires no validation. When true, we can optimize encoding arrays and vectors of Self::Owned to a single memcpy.

fn decode_is_copy() -> bool

Returns true if the memory layout of Self::Owned matches the FIDL wire format and decoding requires no validation. When true, we can optimize decoding arrays and vectors of Self::Owned to a single memcpy.

impl ValueTypeMarker for TouchEvent

type Borrowed<'a> = &'a TouchEvent

The Rust type to use for encoding. This is a particular Encode<Self> type cheaply obtainable from &Self::Owned. There are three cases:

fn borrow( value: &<TouchEvent as TypeMarker>::Owned, ) -> <TouchEvent as ValueTypeMarker>::Borrowed<'_>

Cheaply converts from &Self::Owned to Self::Borrowed.

impl Persistable for TouchEvent

impl StructuralPartialEq for TouchEvent